package org.opencv.core;

import java.util.Arrays;
import java.util.List;

public class MatOfRect extends Mat {
	// 32SC4
	private static final int _depth = CvType.CV_32S;
	private static final int _channels = 4;

	public MatOfRect() {
		super();
	}

	protected MatOfRect(long addr) {
		super(addr);
		if (!empty() && checkVector(_channels, _depth) < 0)
			throw new IllegalArgumentException("Incompatible Mat");
		// FIXME: do we need release() here?
	}

	public static MatOfRect fromNativeAddr(long addr) {
		return new MatOfRect(addr);
	}

	public MatOfRect(Mat m) {
		super(m, Range.all());
		if (!empty() && checkVector(_channels, _depth) < 0)
			throw new IllegalArgumentException("Incompatible Mat");
		// FIXME: do we need release() here?
	}

	public MatOfRect(Rect... a) {
		super();
		fromArray(a);
	}

	public void alloc(int elemNumber) {
		if (elemNumber > 0)
			super.create(elemNumber, 1, CvType.makeType(_depth, _channels));
	}

	public void fromArray(Rect... a) {
		if (a == null || a.length == 0)
			return;
		int num = a.length;
		alloc(num);
		int buff[] = new int[num * _channels];
		for (int i = 0; i < num; i++) {
			Rect r = a[i];
			buff[_channels * i + 0] = (int) r.x;
			buff[_channels * i + 1] = (int) r.y;
			buff[_channels * i + 2] = (int) r.width;
			buff[_channels * i + 3] = (int) r.height;
		}
		put(0, 0, buff); // TODO: check ret val!
	}

	public Rect[] toArray() {
		int num = (int) total();
		Rect[] a = new Rect[num];
		if (num == 0)
			return a;
		int buff[] = new int[num * _channels];
		get(0, 0, buff); // TODO: check ret val!
		for (int i = 0; i < num; i++)
			a[i] = new Rect(buff[i * _channels], buff[i * _channels + 1], buff[i * _channels + 2],
					buff[i * _channels + 3]);
		return a;
	}

	public void fromList(List<Rect> lr) {
		Rect ap[] = lr.toArray(new Rect[0]);
		fromArray(ap);
	}

	public List<Rect> toList() {
		Rect[] ar = toArray();
		return Arrays.asList(ar);
	}
}
